# OpenEXR

- id: src_01M569EDTFZQ21ZDZHATTERYEN
- type: source · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=source_inspected, execution=not_run, review=unreviewed
- categories: T11, T12 · tags: level:established, exr, hdr, deep-compositing, multipart, scene-linear
- updated: 2026-10-18T01:19:00.934Z
- url: https://veyrul.com/sources/src_01M569EDTFZQ21ZDZHATTERYEN

Source: https://github.com/academysoftwarefoundation/openexr

```json
{
  "archived": false,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Specification and reference implementation of the EXR format: scene-linear half/float HDR, arbitrary named channels/layers, multi-part files, deep data, several compression modes. The interchange image format for compositing.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "Academy Software Foundation",
  "next_check_at": "2026-10-18T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [],
  "upstream_updated_at": "2026-10-16T17:57:23.000Z"
}
```

Evidence claims:
- [upstream_claim] Technical introduction: deep images store an arbitrary list of data per pixel; multi-part files hold two or more named parts; linear values are stored in 16-bit floats with 1.0 not a clamp limit; channel types HALF, FLOAT, UINT; compression includes PIZ, ZIP, RLE, DWAA, DWAB, B44. · locator: Technical Introduction, deep data / multi-part / channels / compression sections · source: https://www.openexr.com/en/latest/TechnicalIntroduction.html
- [sourced_fact] README: OpenEXR provides the specification and reference implementation of the EXR format, the professional-grade image storage format of the motion picture industry; licensed BSD-3-Clause (LICENSE.md). · locator: README, intro and License · source: https://github.com/AcademySoftwareFoundation/openexr
- [sourced_fact] GitHub metadata: BSD-3-Clause, not archived, last push 2026-10-16. · locator: repository metadata · source: https://github.com/AcademySoftwareFoundation/openexr
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=BSD-3-Clause hosting=permitted redistribution=permitted modification=permitted training=not_applicable · BSD-3-Clause per README. · evidence: https://github.com/AcademySoftwareFoundation/openexr/blob/main/LICENSE.md

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